gafney



" an. GAFNEY.

TOOL FOR SAWING ANDIJ'OINTING SOAPSTONE SLABS. No. 177,496.

Patented MaylB, 1876. Y

P TENT Prion.

. HIMSELF AND JULIA F. MARLI ARIL OF SAME PLACE.

IMPROVEMENT ,IN TOOLS FOR SAWING ANDJOINT-ING SOAP-STONE SLABS.

Specification forming *part of Letters Patent No. 177,496, .datedMaylti, 1876; application filed April 12, 1876.

To all whom it may concern:

Be it known that I, PATRICK H. GAFNEY, of South Boston, in the county ofSufi'olk and State of Massachusetts, have invented certain Improvementsin Tool for Sawing and J ointing Soapstone, of Which the following is aSpecification:

In the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of my invention. Fig. 2 representsa top plan view of the same. Fig. 3

- represents a bottom'plan view. Fig. 4 represents a section on plane ofline m 00, Figs. 1 and 2. Figs. 5 and 6 are detached views of parts andFig. 7 is a view showing two slabs fitted together by my improved tool.

This invention has for its object to provide,

a tool adapted'to make one or two cuts of any desired depth in asoap-stone or other slab parallel with and at any desired distance fromthe edge, and also adapted to smoot-hen or joint the edges of soap-stoneor other slabs, and remove the saw-marks therefrom, the tool beingintended particularly to prepare soap-stone slabs for stoves, sinks,&c., by cutting mortises or grooves near the edges of certain slabs andtenons, adapted to fit the mortises on the edges of other slabs, and byjointing the edges of the slabs, and, thus adapting them to fit snuglytogether.

To these ends, my invention consists, first, in a tool having two saws,which are held parallel with each other at variable distances apart, andare adapted to cut to any desired depth into a slab, eithersimultaneously or singly, and at any desired distance from the edge ofthe slab. It also consists in a peculiarly-constructed reversiblejointer adapted to dress the edges of soap-stone slabs, all of which Iwill now proceed to describe.

1n the drawings, A represents a frame, preferably of wood, adapted toreceive and hold two saws, B B, whose cutting-edges project below theframe, the latter being provided at its upper edge with a lip or flange,O, and at each end with an ear, D, the flange and ears projecting in thesame direction, and serving to partially confine the saws B. The sawsare also confined to the frame A by a clamping-plate, E, and bolts F,which latter are are provided between the saws with two or' morewashers, H, these washers regulating the space between the saws; hence,by taking away or adding-a washer, the space is diminished or increased.The thumb-nuts hold the clamping-plate E tightly against the outer sawwhen screwed up, the saws being thus rigidly held. When the nuts areloosened, the slots H of the saws enable them to be raised. or loweredso as to increase or diminish the space between their teeth and thelower edge of the frame A, and consequently the depth of their cut. Irepresents an'adjustable gage to regulate the distance between the sawsand the adjacent edge of the slab. This gage is composed of a bar ofsuitable shape connected to the frame A by two parallel arms, J, whichare rigidly attached to the' frame, and are adapted to slide in slots inthe gage l, set-screws K K being employed to hold them when properlyadjusted. The arms J J are graduated on their upper surfaces. Krepresents an adjustable guard for regulating the depth of the cut ofthe saws when shallow cuts are to be made. This guard consists of ahorizontal plate located between the saws, and'provided with slottedvertical plates L L, which are attached to the frame A by setscrews M,the screws passing through the slots N, and holding the guard K at anydesired height.

The tool thus constructed can be operated in such manner as to make twoparallel cuts simultaneously in the side of a slab, as at l- 1, Fig. 4.,or two single cuts, so made as to take out the corner of the slab, theparallel cuts enabling a mortise to be formed by taking out the stonebetween the cuts with a chisel, and the single cuts forming a tenon onthe edge of the slab adapted to fit into the mortise, as shown in Fig.7, only the outer saw B being used in this latter operation.

0 represents a jointer, which is composed of a fiat metal plate attachedto the under side of the gage-bar I, or to any suitable bar or backing,by screws or bolts P, the heads of which are countersunk. Bothsides ofthe plate 0 are serrated, the serrations being of any form adapted tofile or smoothen soapstone s'urfaees, and, when one side is worn smooth,the plate may be turned over so as to expose the other side. The bar Iis provided with a gage-plate, J, on .one side, which is adapted to beraised or lowered. The jointer is used either with or without the sawingmechanism by rubbing the edge of a slab with the serrated surface-of theplate 0,,

I claim- 1. The slotted saws B B, combined with the frame A, bolts F,and washers H, substantially as described.

2. The combination of the frame A, adjustable saws B B, and adjustableguard K, substantially as described.

PATRICK H. GAFNEY.

Witnesses RUDOLPH SKo0G, G. F. BROWN.

